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Architectural Roofing & Waterproofing - 2009 Vol. 5
Inverted Membrane Roof Systems

In an inverted membrane system, the coventional membrane arrangement is invereted or turned upside down. Inverted roof membrance assembly (IRMA) systems are used in applications where the membrane requires protection from site-specific hazards. These systems are typically applied in conditions where there is extensive roof traffic or to protect from excessive weather conditions such as multiple hail events. IRMA roofs protect the membrane from ultraviolet degradation and constant temperature changes.